PDF malware analysis — malicious · 1d7ce9479f711917

MALICIOUS

PDF

78.2 KB Created: 2021-09-15 20:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 58709c5442a69137564b32988126cf36 SHA-1: 36d0a2659489ffb6a8caf03d32a3fc8a28d739f1 SHA-256: 1d7ce9479f7119171fcfae03866cde7df6e102d8fdd755bd3cb48c9f3830b0ae

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which point to suspicious domains and are likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and numerous links suggest it's designed to redirect users to malicious content, likely as part of a spearphishing campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://speaklifeiamgreatness.com/files/files/fizapiragobiwibarubex.pdf In PDF document text
- http://precisao.net/files/files/51283338286.pdfIn PDF document text
- http://bc-arman.kz/ckfinder/userfiles/files/sogeremaf.pdfIn PDF document text
- http://tuecpa.com/file_media/file_image/file/50783711481.pdfIn PDF document text
- http://baobianhkhang.com/upload/files/jukazagomafilabugupefezu.pdfIn PDF document text
- http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1612f42f406303---jaselipavuloxavatesito.pdfIn PDF document text
- https://pasarant0g3l-turbo-h1t.com/contents/files/63315274467.pdfIn PDF document text
- https://cicasoftavukatwebsitesi.demowebsiteleri.com/upload/files/potoweperadanunisote.pdfIn PDF document text
- http://vanharteyoga.nl/uploads/files/satagamakagoxo.pdfIn PDF document text
- http://morpheus-architects.com/file_media/file_image/file/47897860001.pdfIn PDF document text
- http://aiswaryamatrimonials.com/fck_uploads/file/96648510194.pdfIn PDF document text
- https://kimtuong.vn/isc/public/files/fckupload/file/57705973405.pdfIn PDF document text
- http://bonfiremadigan.com/uploads/fckeditor/file/28867367919.pdfIn PDF document text
- http://www.rafaellucenaehijos.com/ckfinder/userfiles/files/fipazizigowejojonibezudas.pdfIn PDF document text
- http://edins.net/userData/ebizro_board/file/zamupobu.pdfIn PDF document text
- http://king-tableware.com/uploads/files/202109140531583472.pdfIn PDF document text
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/161365a4ae7759---sajogujobizobef.pdfIn PDF document text
- https://helicopterleasingservices.com/userfiles/files/nigujaperoxuvudugijidofo.pdfIn PDF document text
- https://equator-maritime.com/userfiles/file/kagidiwivodabef.pdfIn PDF document text
- https://flomogroup.com/upload/files/senemelejoza.pdfIn PDF document text
- http://www.somdattabasu.com/fckimages/file/84316650022.pdfIn PDF document text
- https://afra24.com/basefile/afra24/files/kuxifewemego.pdfIn PDF document text
- https://sokolzgierz.pl/web/uploads/files/noborunuwe.pdfIn PDF document text
- https://expomediainc.com/upload/file/90497231606.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=factory+reset+codePDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d059.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD059	10212 bytes
SHA-256: `76a489eb1d04e0832a70901ba027b1831089b5528ef1ac31e703b9b06bff6f23`
`font_01_sfnt_off0000e770.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE770	16832 bytes
SHA-256: `541c6029992f32b8db27eea9b20f68612da6226dc891e1ff165ab7d10a2d45a7`
`font_02_sfnt_off00011305.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11305	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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